0.0.1

.gitignore

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+/*.gem
+~*
+#*
+*~
+.bundle
+Gemfile.lock
+.rbenv-version
+vendor
+doc/*
+tmp/*
+coverage
+.yardoc
+.ruby-version
+pkg/*

.travis.yml

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+rvm:
+ - 1.9.3
+ - 2.0.0
+ - 2.1
+ - 2.2
+gemfile:
+ - Gemfile

CHANGELOG.md

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+## 0.0.1
+
+First version

Gemfile

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+source "http:https://rubygems.org"
+
+gemspec

LICENSE

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+Copyright (c) 2015 Naotoshi Seo
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# fluent-plugin-filter_typecast
+
+[![Build Status](https://secure.travis-ci.org/sonots/fluent-plugin-filter_typecast.png?branch=master)](http:https://travis-ci.org/sonots/fluent-plugin-filter_typecast)
+
+A Fluentd filter plugin to cast record types
+
+## Requirements
+
+Fluentd >= v0.12
+
+## Install
+
+Use RubyGems:
+
+```
+gem install fluent-plugin-filter_typecast
+```
+
+## Configuration Example
+
+```apache
+<source>
+ type dummy
+ tag dummy
+ dummy {"field1":"1","field2":"2","field3":"2013-02-12 22:04:14 UTC","field4":"true","field5":"a,b,c"}
+</source>
+
+<filter **>
+ type typecast
+ types field1:integer,field2:string,field3:time,field4:bool,field5:array
+</filter>
+
+<match **>
+ type stdout
+</match>
+```
+
+You should see casted records:
+
+```
+dummy {"field1":1,"field2":"2","field3":1418380657,"field4":true,"field5":["a","b","c"]}
+```
+
+## Parameters
+
+* types
+ * KEY:TYPE pairs separated by comma(,)
+ * support types:
+ * integer
+ * float
+ * string
+ * time
+ * bool
+ * array
+
+### time_format
+
+Time format can be specified like `KEY:time:TIME_FORMAT` as:
+
+```apache
+<filter **>
+ type typecast
+ types field3:time:%d/%b/%Y:%H:%M:%S %z
+</filter>
+```
+
+### array_delimiter
+
+Array delimiter can be specified like `KEY:array:DELIMITER` as:
+
+```apache
+<filter **>
+ type typecast
+ types field5:array:.
+</filter>
+```
+
+## ChangeLog
+
+See [CHANGELOG.md](CHANGELOG.md) for details.
+
+## Contributing
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create new [Pull Request](../../pull/new/master)
+
+## Copyright
+
+Copyright (c) 2015 Naotoshi Seo. See [LICENSE](LICENSE) for details.

Rakefile

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+# encoding: utf-8
+require "bundler/gem_tasks"
+
+require 'rake/testtask'
+desc 'Run test_unit based test'
+Rake::TestTask.new(:test) do |t|
+ t.libs << "test"
+ t.test_files = Dir["test/**/test_*.rb"].sort
+ t.verbose = true
+ #t.warning = true
+end
+task :default => :test
+
+desc 'Open an irb session preloaded with the gem library'
+task :console do
+ sh 'irb -rubygems -I lib'
+end
+task :c => :console

example.conf

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+<source>
+ type dummy
+ tag dummy
+ dummy {"field1":"1","field2":"2","field3":"2013-02-12 22:04:14 UTC","field4":"true","field5":"a,b,c","other":"other"}
+</source>
+
+<filter **>
+ type typecast
+ types field1:integer,field2:string,field3:time,field4:bool,field5:array
+</filter>
+
+<match **>
+ type stdout
+</match>

fluent-plugin-filter_typecast.gemspec

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+# -*- encoding: utf-8 -*-
+$:.push File.expand_path("../lib", __FILE__)
+
+Gem::Specification.new do |s|
+ s.name = "fluent-plugin-filter_typecast"
+ s.version = "0.0.1"
+ s.authors = ["Naotoshi Seo"]
+ s.email = ["[email protected]"]
+ s.homepage = "https://github.com/sonots/fluent-plugin-filter_typecast"
+ s.summary = "A Fluentd filter plugin to cast record types"
+ s.description = s.summary
+ s.licenses = ["MIT"]
+
+ s.files = `git ls-files`.split("\n")
+ s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
+ s.executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+ s.require_paths = ["lib"]
+
+ s.add_runtime_dependency "fluentd", ">= 0.12"
+ s.add_development_dependency "rake"
+ s.add_development_dependency "test-unit"
+ s.add_development_dependency "pry"
+ s.add_development_dependency "pry-nav"
+end

lib/fluent/plugin/filter_typecast.rb

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+module Fluent
+ class TypecastFilter < Filter
+ Fluent::Plugin.register_filter('typecast', self)
+
+ include ::Fluent::TextParser::TypeConverter
+
+ def filter(tag, time, record)
+ record.map do |key, val|
+ [key, convert_type(key, val)]
+ end.to_h
+ end
+ end
+end

test/helper.rb

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+require 'test/unit'
+require 'fluent/log'
+require 'fluent/test'
+
+unless defined?(Test::Unit::AssertionFailedError)
+ class Test::Unit::AssertionFailedError < StandardError
+ end
+end

test/test_filter_typecast.rb

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+require_relative 'helper'
+require 'fluent/plugin/filter_typecast'
+
+class DupFilterTest < Test::Unit::TestCase
+ include Fluent
+
+ setup do
+ Fluent::Test.setup
+ @time = Fluent::Engine.now
+ end
+
+ def create_driver(conf = '')
+ Test::FilterTestDriver.new(TypecastFilter).configure(conf, true)
+ end
+
+ def filter(d, msgs)
+ d.run {
+ msgs.each {|msg|
+ d.filter(msg, @time)
+ }
+ }
+ d.filtered_as_array
+ end
+
+ sub_test_case 'configure' do
+ def test_types
+ d = create_driver(%[
+ types string:string,integer:integer,float:float,bool:bool,time:time,array:array
+ ])
+ types = d.instance.instance_variable_get(:@type_converters)
+ converters = ::Fluent::TextParser::TypeConverter::Converters
+ assert_equal converters['string'], types['string']
+ assert_equal converters['integer'], types['integer']
+ assert_equal converters['float'], types['float']
+ assert_equal converters['bool'], types['bool']
+ # assert_equal converters['time'], types['time']
+ # assert_equal converters['array'], types['array']
+ end
+ end
+
+ sub_test_case 'test_type_cast' do
+ def test_types
+ d = create_driver(%[
+ types string:string,integer:integer,float:float,bool:bool,time:time,array:array
+ ])
+ msg = {
+ 'integer' => '1',
+ 'string' => 'foo',
+ 'time' => '2013-02-12 22:01:15 UTC',
+ 'bool' => 'true',
+ 'array' => 'a,b,c',
+ 'other' => 'other',
+ }
+ filtered = filter(d, [msg]).first[2]
+ assert_equal 1, filtered['integer']
+ assert_equal 'foo', filtered['string']
+ assert_equal 1360706475, filtered['time']
+ assert_equal true, filtered['bool']
+ assert_equal ['a', 'b', 'c'], filtered['array']
+ assert_equal 'other', filtered['other']
+ end
+
+ def test_time_format
+ d = create_driver(%[types time:time:%d/%b/%Y:%H:%M:%S %z])
+ msg = { 'time' => '12/Dec/2014:19:37:37 +0900' }
+ filtered = filter(d, [msg]).first[2]
+ assert_equal 1418380657, filtered['time']
+ end
+
+ def test_array_delimiter
+ d = create_driver(%[types array:array:.])
+ msg = { 'array' => 'a.b.c' }
+ filtered = filter(d, [msg]).first[2]
+ assert_equal ['a','b','c'], filtered['array']
+ end
+ end
+end